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# HCL Essay Examples

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Analysis of Brick cleaner Aim

Theory/Hypothesis: The main ingredient in brick cleaner is HCL and must be diluted and titrated with a base to be able to analyse it. It reacts with parts of the concrete which allows it to remove the concrete from the bricks. I think there will be around 30% of HCL in brick cleaner. Materials: 5mL…

Analysis of neutralizing power of anti-acid tablets

Neutralization occurs when acid and alkali are mixed together. It involves the reaction between H+ and OH-, forming salt and water. The properties of acid and alkali will be cancelled out in the process of neutralization. In our stomach, the gastric juice inside contains concentrated HCl (at about pH2). When excessive amount of gastric juice…

Determination of Yeild

Abstract The main objective of this experiment was to find the mole to mole ratio of is NaHCO3(s), or sodium bicarbonate, to NaCl, or sodium chloride when it is reacted with excess hydrochloric acid. The result of this was a 1 to 1 ratioThe other main objective, which was similar to the first, was to…

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The effect of reactant concentration

Then pour the amount of Sodium Thiosulfate using a measuring cylinder to the conical flask, the amount will vary depending on the sample. 4. Rinse the measuring cylinder in water under the tap to clean it of excess sodium thiosulfate. 5. Pour the water from the measuring cylinder into the conical flask (already containing the…

Determining an Equilibrium constant

To find out the equilibrium constant, Kc, for the reaction below, using acid hydrolysis: CH3COOC2H5 + H2O? CH3COOH + C2H5OH Theory although the hydolysis of ethyl ethanoate is very slow, by using dilute hydrochloric acid as catalyst which can be used to alter the time required to reach the equilibrium as the catalyst increases both…

The CaCO3 chips

I did a number of experiments before I started my actual experiment: i) I weighed 10. 0g of CaCO3 chips, each one roughly 10-12mm large. I then placed it into a conical flask. I then added 50cm3 oh 2M HCl. All the gas that was given off was collected in a 100cm3 gas syringe. The…

Chemistry Concentration effects rate of reaction

I chose to use hydrochloric acid at 100% for the main experiment. Main Experiment For the main experiment I chose to change the concentration of the Sodium Thiosulphate. I will be testing the concentrations 100%, 90%, 80%, 70%, 60%, 50%, 40%, 30%, 20% and 10% and recording the results. I will then plot two…

The rate of reaction with CaCO3

The graph shows us that as you increase the concentration, there is more hydrogen being made. The r? value also tells us that our results are very accurate because the r? value is close to 1 (0. 9744). The R? value tells us how our results fit the line of best fit, if the r?…

The factors that affect the rate of reaction

My aim is to investigate the factors that affect the rate of reaction. I will be seeing how the concentration of the hydrochloric acid affects the rate of reaction with magnesium ribbon. Diagram Risk Assessment  Be careful whilst using the acids  Make sure all glassware is safely on the table to prevent it from falling…

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